...if there are social security numbers (or something like it) in England? And if someone from England was going to school in the US and there was a blank on the registration for the social security #, what would he/she put there?
(It's for a story i'm writing. Thanks!)

My national insurance number is different.
It starts with two letters, numbers, then a letter
E.g. AB 10 11 12 C
I thought they were all like that in Britain.

My NI number is in that form too.

Although speaking as someone who went to school in the US for a year, I think a British person would have to leave boxes requiring a social security number blank since UK NI numbers mean nothing to US officials. Just my 0.2.